/* /<script> block if you already have a form on the
  page.
-->

<form action="" method="post" id="demoForm">
  <p>
    <label for="phone">Phone number</label><br>
    <input type="tel" name="phone" id="phone" class="ccs-phone" placeholder="Phone number" required>
  </p>
  <button type="submit">Submit</button>
</form>

<style> */
  .ccs-field {
    --ccs-border: #d7d7db;
    --ccs-border-focus: #6c5ce7;
    --ccs-bg: #ffffff;
    --ccs-text: #1c1c1e;
    --ccs-muted: #7a7a80;
    --ccs-hover: #f4f3ff;
    --ccs-radius: 8px;
    display: flex;
    align-items: stretch;
    max-width: 380px;
    border: 1px solid var(--ccs-border);
    border-radius: var(--ccs-radius);
    background: var(--ccs-bg);
    overflow: hidden;
    position: relative;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    transition: border-color .15s ease, box-shadow .15s ease;
  }
  .ccs-field:focus-within {
    border-color: var(--ccs-border-focus);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, .12);
  }
  .ccs-flagbtn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: none;
    border-right: 1px solid var(--ccs-border);
    padding: 0 10px;
    cursor: pointer;
    font-size: 15px;
    color: var(--ccs-text);
    white-space: nowrap;
  }
  .ccs-flagbtn:hover { background: var(--ccs-hover); }
  .ccs-flag { font-size: 18px; line-height: 1; }
  .ccs-dialcode { font-size: 14px; color: var(--ccs-muted); }
  .ccs-caret { color: var(--ccs-muted); margin-left: 2px; }
  .ccs-field input.ccs-phone {
    flex: 1;
    border: none;
    outline: none;
    padding: 10px 12px;
    font-size: 15px;
    color: var(--ccs-text);
    min-width: 0;
    box-sizing: border-box;
  }
  .ccs-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    width: 320px;
    max-width: 90vw;
    background: var(--ccs-bg);
    border: 1px solid var(--ccs-border);
    border-radius: var(--ccs-radius);
    box-shadow: 0 8px 24px rgba(0,0,0,.12);
    z-index: 9999;
    overflow: hidden;
  }
  .ccs-searchwrap { padding: 8px; border-bottom: 1px solid var(--ccs-border); }
  .ccs-search {
    width: 100%;
    box-sizing: border-box;
    padding: 8px 10px;
    border: 1px solid var(--ccs-border);
    border-radius: 6px;
    font-size: 14px;
    outline: none;
  }
  .ccs-search:focus { border-color: var(--ccs-border-focus); }
  .ccs-list {
    list-style: none;
    margin: 0;
    padding: 4px;
    max-height: 260px;
    overflow-y: auto;
  }
  .ccs-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    color: var(--ccs-text);
  }
  .ccs-item:hover, .ccs-item.ccs-active { background: var(--ccs-hover); }
  .ccs-item .ccs-flag { font-size: 17px; }
  .ccs-item .ccs-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .ccs-item .ccs-code { color: var(--ccs-muted); font-size: 13px; }
  .ccs-empty { padding: 16px; text-align: center; color: var(--ccs-muted); font-size: 13px; }